This reminds me of the Golgotha drop from 2000: unfinished code and assets from a scrapped game, released as open source/PD. I don't know what, if anything, ever became of those...
wow, thanks for reminding me of that. i remember this happening...brings back some memories. i was trying to learn to program my own games, and this event (despite the unfortunate circumstances) seemed like some gift from the gods in terms of being able to see the guts of a real game.